Image to Base64 Converter

Convert any image to a Base64 data URI. Drag and drop or click to upload. Works with PNG, JPG, GIF, SVG, and WebP formats.

Last Updated: July 2026
100% Client-Side — Your data never leaves your device

Drop an image here, or click to browse

Supports PNG, JPG, GIF, SVG, WebP

Why this tool is safe

Your data never leaves your device — everything runs in your browser.

No server uploads. Other tools send your files to their servers. Ours don't.
Zero tracking of content. We never see, store, or log anything you convert.
Works offline. Once loaded, the tool works without an internet connection.

Image to Base64 in Code

Convert images to Base64 data URIs programmatically.

JavaScript
// Browser: Convert File to Base64 data URI
function fileToBase64(file: File): Promise<string> {
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.onload = () => resolve(reader.result as string);
    reader.onerror = reject;
    reader.readAsDataURL(file);
  });
}

// Node.js: Convert image file to Base64
import { readFileSync } from "fs";
const base64 = readFileSync("image.png").toString("base64");
const dataUri = `data:image/png;base64,${base64}`;

Frequently Asked Questions

Search below or browse through our most commonly asked questions.

Drag and drop an image onto the upload area, or click to browse and select a file. The tool will instantly generate a Base64 data URI that you can copy and use in HTML, CSS, or JavaScript.
We support all common image formats: PNG, JPG/JPEG, GIF, SVG, WebP, and BMP. The MIME type is automatically detected from the file.
Since the conversion runs entirely in your browser, the limit depends on your device's memory. Typically, images up to 50MB work fine, but generating very large text strings can slow down the browser.